BIOL354 Study Guide - Midterm Guide: Hydrophobe, Pyrethroid, Hydraulic Fluid
1 Nov 2013
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Toxicology study of toxic substances (toxicants/contaminants); study of poisons. Xenobiotic foreign substances to an organism; anything not endogenous. Anthropogenic caused or produced by humans; describes origin or compound which otherwise would not occur naturally. Toxicants poisonous agent that produces adverse biological effects; can be organic or inorganic e. g. , metals, pahs, pcbs etc. Toxin toxic substance produced by a living organism e. g. , snake venom, tetrodotoxin (found in puffer fish shuts down nervous system and you die) Paracelsus everything is toxic; it"s the dose that makes the poison. It"s the study of harmful effects of chemicals on ecosystems. Inorganic metals, ammonia: radiation e. g. , japan"s fukushima daiichi nuclear plant release, organic dioxins, furans, pahs, pesticides insectides, fungicides, herbicides, complex affluents stp, mine, pulp and paper. Pollution substances in environment that produce adverse effects; not all necessarily toxicants (e. g. , p eutrophication) but many are (e. g. , pahs, pcbs).
